Ryde GPIO breakout - Revision history

G8GTZ: /* =Schematic and bill of materials */

2020-12-12T15:04:15Z

=Schematic and bill of materials

2020-12-12T15:03:21Z

Upside-down construction

2020-12-12T15:02:43Z

2020-11-13T22:50:07Z

2020-11-10T23:47:24Z

=Schematic and bill of materials

2020-11-10T23:44:09Z

Schematic and bill of materials

2020-09-15T19:13:21Z

Schematic and bill of materials

2020-09-15T19:09:34Z

Construction notes

2020-08-19T20:37:53Z

2020-08-09T16:18:02Z

← Older revision		Revision as of 15:04, 12 December 2020
Line 17:		Line 17:
	* The fuse is a standard automotive mini-blade, 3A. Take care inserting it as it requires considerable force. You may need to open up the socket a little.		* The fuse is a standard automotive mini-blade, 3A. Take care inserting it as it requires considerable force. You may need to open up the socket a little.

−	===Schematic and bill of materials==	+	==Schematic and bill of materials==

@@ Line 74: / Line 74: @@
 ===Upside-down construction===
-If, for mechanical reasons, you want to put all the components on the underside of the GPIO breakout, you need to remember that the header pin connections will be reversed.  The most important one to get right is the Power + and -.  However, you will also need to modify the ribbon cable to the front panel as shown in this photo.
+If, for mechanical reasons, you want to put all the components on the underside of the GPIO breakout, '''you need to remember that the header pin connections will be reversed.'''  The most important one to get right is the Power + and -.  However, you will also need to modify the ribbon cable to the front panel as shown in this photo.
 [[File:Ryde Reversed Ribbon.jpg|400px]]
 The ribbon connector was opened up, each odd/even pair reversed, and then the connector closed again.

@@ Line 9: / Line 9: @@
 * Note the GPIO board requires 5v NOT 12v!
-* The GPIO header is placed on the opposite side of the PCB to the rest of the components (but see below - upside down construction).
+* The GPIO header '''is placed on the opposite side of the PCB''' to the rest of the components (but see below - upside down construction).
 * Pay attention to the orientation of the resistor arrays - the packages are not symmetrical.

@@ Line 11: / Line 11: @@
 * The GPIO header is placed on the opposite side of the PCB to the rest of the components (but see below - upside down construction).
-* Pay attention to the orientation of the resistor arrays - they are not the same.
+* Pay attention to the orientation of the resistor arrays - the packages are not symmetrical.
 * Build the top side first, start with the resistors, then the resistor arrays, then the 16 way, then the headers, finally fit the 40 way on the other side of the PCB.

@@ Line 23: / Line 23: @@
 Nothing is really critical here so don't worry about 47k vs 10k vs 22k resistor arrays.
-What does matter is the IR sensor does not put more than 3.3V into the GPIO as the PI is not 5V tolerant. Therefore either use a 3.3V sensor as recommended, or if you insist on re-using that old sensor recovered from a set top box make a resistor divider using appropriate values for R2 and R3.  See [[Ryde remote controls|https://wiki.batc.org.uk/Ryde_remote_controls]] for more details
+What does matter is the IR sensor does not put more than 3.3V into the GPIO as the PI is not 5V tolerant. Therefore either use a 3.3V sensor as recommended, or if you insist on re-using that old sensor recovered from a set top box make a resistor divider using appropriate resistors.  See [[Ryde remote controls|https://wiki.batc.org.uk/Ryde_remote_controls]] for more details
 '''Farnell part numbers: Other suppliers are available.'''
@@ Line 31: / Line 33: @@
 IR Sensor - TSOP2438 Farnell code 4913097 Run off 3.3V R3 4k7, omit R2.
-For 5V sensors possibly set R2 10k, R3 4k7, but this may not work for all sensors. (Hint - Just use the recommended sensor, run it off 3.3V)
+For 5V sensors possibly [ADVICE DELETED - USE a 3.3V SENSOR]
 SIP Resistor arrays 10k 4606X-101-103LF  Farnell code 9356142

← Older revision		Revision as of 23:44, 10 November 2020
Line 17:		Line 17:
	* The fuse is a standard automotive mini-blade, 3A. Take care inserting it as it requires considerable force. You may need to open up the socket a little.		* The fuse is a standard automotive mini-blade, 3A. Take care inserting it as it requires considerable force. You may need to open up the socket a little.

−	===Schematic and bill of materials===	+	===Schematic and bill of materials==

−	~~[[File:Ryde GPIO6.png\|800px]]~~
−
−	~~[[File:Ryde GPIO 1.jpg\|400px]]~~

← Older revision		Revision as of 19:13, 15 September 2020
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	'''Alternative Digikey Parts:'''		'''Alternative Digikey Parts:'''
	TBC		TBC
		+
		+	===Upside-down construction===
		+
		+	If, for mechanical reasons, you want to put all the components on the underside of the GPIO breakout, you need to remember that the header pin connections will be reversed. The most important one to get right is the Power + and -. However, you will also need to modify the ribbon cable to the front panel as shown in this photo.
		+
		+	[[File:Ryde Reversed Ribbon.jpg\|400px]]
		+
		+	The ribbon connector was opened up, each odd/even pair reversed, and then the connector closed again.

← Older revision		Revision as of 20:37, 19 August 2020
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	'''Alternative Digikey Parts:'''		'''Alternative Digikey Parts:'''
	TBC		TBC
−
−
−	~~The actual buttons and layout are up to the constructor. To give an idea, here is how G0MJW did it.~~
−
−
−	~~[[File:Button Board.jpg\|thumb]]~~
−
−
−	Most people will want to wire their own front panel with a layout that suits them, however gerber files for the above are here which should be compatible with the PCB suppliers should you so wish. The buttons are standard B3F e.g. from RS 686-6970 (Two off pack of 5) or Ebay.
−
−	~~[[File:Gerbers.zip\|thumb\|Gerber files.]]~~
−
−	~~Here is a 3D template~~
−
−	~~[[File:Ryde1PanelPrimative.zip\|thumb]]~~

← Older revision		Revision as of 16:18, 9 August 2020
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	[[File:Gerbers.zip\|thumb\|Gerber files.]]		[[File:Gerbers.zip\|thumb\|Gerber files.]]
		+
		+	Here is a 3D template
		+
		+	[[File:Ryde1PanelPrimative.zip\|thumb]]